We (HFE Int) ran a Honda 35cc 4 stroke swinging a 22x8 prop on JP8 then on JP5(yes kerosene, jet engine fuel). Initially ran it up on gas using a 4-1 flying magnet trigger wheel and the sequential cam phasing using the MAP pulse then moved the clunk over to the JP8 can and watched the CO% and adjusted from there. Then swapped over to JP5 and repeated. JP8 runs a touch richer than JP5 but could tolerate the same VE fuel table.